Free SF apartment background check

504-506 Oak St

Hayes Valley, SF 94102 0829007 2 units · 2 fl · 1890

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Hayes Valley
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Hayes Valley average of 2.3.

Rent & eviction protection

Is 504-506 Oak St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1890
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors2
Year built1890
Total area2,474 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0829007
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Gekakis Helen V
Mailing address
506 Oak St San Francisco CA 94102
Last sale
082897

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

504 Oak St, San Francisco, CA 94102
506 Oak St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The property at 504-506 Oak Street is a two-unit, two-story multi-family residential building located in Hayes Valley, built in 1890 and currently owned by Helen V. Gekakis. The building has undergone several significant improvements and faced various maintenance issues over the years. Most notably, in 2014, structural upgrades were completed to support a two-story bay window, and the sewer line was replaced. In 2012, there were two complaints regarding uncontained paint removal on the back of the building, though these issues were promptly addressed within one month.

The building's history reveals some concerning maintenance issues in the 1990s, including a report of a leaking ceiling with mildew, locked emergency exits, broken door handles, heating problems, and pest issues. There was also a period in 2009 when building permit applications were filed and withdrawn regarding garage demolition and proposed new construction. More recent records from 2018-2024 show primarily routine urban maintenance issues such as graffiti, sidewalk cleaning, and garbage-related complaints, which have all been resolved. The property has been the subject of various planning inquiries, including a proposed unit over garage construction and a residential care program expansion, though some applications were withdrawn or marked as informational. The most recent building-related activity occurred in 2024 with multiple sanitation-related service requests, suggesting ongoing maintenance attention is needed for common areas around the property.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 504-506 Oak St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
90th percentile

Out of 1027 buildings in this neighborhood, 103 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 89.4%
Moderate concern 6.6%
Severe concern 4.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

504-506 Oak St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2024
311 Request Nov 10
Blocking driveway cite only
Parking Enforcement
311 RequestOct 26
Garbage and debris

See all 3 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 504-506 Oak St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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